Corrected gmtoff_of usage and fix crash caused by commit 0be6827.
Bug#3848 lib/charset/aliases.txt: add latin1 as alias of iso-9959-1
Hope to get rid of these segfaults once and for all
Update verify_cb() in ctl_mboxlist
sieve/sieve.y: fix comment

In "vu should call yyerror" vu is supposed to mean verify_utf8, but
here verify_address (=va) is the function, who would call yyerror.
Merge remote-tracking branch 'origin/master' into date-extension
Index Extension - Fix backward compatibility